Dr. Thomas Klein is a board-certified clinical hematologist serving as Chief Medical Officer at Kantesti AI. With over 15 years of experience in laboratory medicine and a strong interest in AI-supported interpretation of blood test results, he works to connect new technology with everyday clinical practice. His areas of interest include biomarker analysis, clinical decision support research and population-specific reference range optimization. As CMO, he contributes clinical input to the platform's internal benchmarking and provides clinical oversight for the medical quality of Kantesti's educational reports.

When to Worry About Bilirubin: Yellow Skin Signs

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Bilirubin Lab Interpretation 2026 Update Patient-Friendly A patient-focused guide to separating harmless bilirubin bumps from jaundice, obstruction, hemolysis and liver warning patterns. 📖 ~11 minutes 📅 July 15, 2026 📝 Published: July 15, 2026 🩺 Medically Reviewed: July 15, 2026 ✅ Evidence-Based This guide was written under the leadership of Dr. Thomas Klein, MD in […]

Slightly Elevated Potassium Meaning: Recheck or ER?

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Electrolytes Lab Interpretation 2026 Update Patient-Friendly A potassium of 5.1-5.5 mmol/L is usually a recheck problem, not an ER problem, unless symptoms, kidney disease, risky medicines, or ECG changes are present. The real question is whether the result is true, hemolyzed, or part of a dangerous pattern. 📖 ~11 minutes 📅 July 15, 2026 📝 […]

When to Worry About Total Cholesterol: Ratio and Risk

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Cholesterol Lab Interpretation 2026 Update Patient-Friendly Total cholesterol is a useful screening number, but it is not the decision-maker. The real question is how much of that cholesterol sits in LDL, non-HDL and remnant particles — and what your overall heart risk looks like. 📖 ~11 minutes 📅 July 15, 2026 📝 Published: July 15, […]

Cortisol vs ACTH: Lab Patterns Doctors Read Together

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Endocrine Patterns Lab Interpretation 2026 Update Patient-Friendly Doctors read cortisol and ACTH as a pair: cortisol tells us the adrenal output, while ACTH tells us whether the brain is asking for more or less. The pattern can point toward adrenal disease, pituitary suppression, medication effects, acute stress, or simply a badly timed sample. 📖 ~11 […]

CEA vs CA 19-9: Tumor Marker Clues by Cancer Type

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Tumor Markers Lab Interpretation 2026 Update Patient-Friendly CEA and CA 19-9 are not interchangeable cancer tests. The useful clue is usually the pattern: cancer type, baseline value, benign triggers, and whether the number keeps moving in the same direction. 📖 ~11 minutes 📅 July 14, 2026 📝 Published: July 14, 2026 🩺 Medically Reviewed: July […]

What Does UA Stand For? Urinalysis vs Uric Acid

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UA Results Lab Interpretation 2026 Update Patient-Friendly UA is one of those lab abbreviations that looks simple until a patient portal uses it in two completely different ways. The clue is usually not the letters; it is the specimen, units, and nearby results. 📖 ~11 minutes 📅 July 14, 2026 📝 Published: July 14, 2026 […]

What Does TFT Stand For? Thyroid Tests Decoded

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Thyroid Labs Lab Interpretation 2026 Update Patient-Friendly TFT is one of those short lab abbreviations that can make a normal-looking report feel cryptic. Here is the practical medical meaning, what may be included, and how clinicians read the pattern. 📖 ~11 minutes 📅 July 14, 2026 📝 Published: July 14, 2026 🩺 Medically Reviewed: July […]

Child Cholesterol Screening: Ages, Risks, Results

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Pediatric Lipids Lab Interpretation 2026 Update Parent-Friendly Most children need one cholesterol check before the teen years, but family history can move that test much earlier. Here is how pediatric lipid screening usually works and what the numbers mean. 📖 ~11 minutes 📅 July 14, 2026 📝 Published: July 14, 2026 🩺 Medically Reviewed: July […]

Sperm Analysis Test Results: Count, Motility, Morphology

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Male Fertility Lab Interpretation 2026 Update Patient-Friendly A semen report is not a pass-fail exam. The most useful reading comes from count, motility, morphology, total motile count, collection quality, and whether the pattern repeats. 📖 ~11 minutes 📅 July 13, 2026 📝 Published: July 13, 2026 🩺 Medically Reviewed: July 13, 2026 ✅ Evidence-Based This […]

AI Health Report Accuracy Checklist for Lab Results

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AI Health Report Lab Interpretation 2026 Update Patient-Friendly A practical patient guide to what AI can read from lab results, what still needs human context, and how to verify a report before you act. 📖 ~11 minutes 📅 July 13, 2026 📝 Published: July 13, 2026 🩺 Medically Reviewed: July 13, 2026 ✅ Evidence-Based This […]